* { 
  -webkit-box-sizing: content-box;
  -moz-box-sizing: content-box;
  box-sizing: border-box;
}
body {
  font: normal 14px Tahoma, Arial, sans-serif;
}
.aa { background-color: #ccc; }
.bb { color: red; }

.container {
  width: 970px;
  margin: 0 auto;
}
.left-sidebar {
  float: left;
  width: 200px;
  background-color: #F0EFE0;
}
.main-container {
  float: right;
  width: 760px;
}

ul.lnav {
  list-style: none;
  margin: 0; padding: 0;
}
ul.lnav li {
  margin: 0; padding: 0;
  display:inline;
}
ul.lnav li a {
  display: block;
  padding: 8px 8px;
  text-decoration: none;
  color: #000;
  border-bottom: 1px solid #ccc;
}
ul.lnav li a:hover {
  background-color: #0055EA;
  color: #fff;
}

.tb-list thead tr th {
  background-color: #ECE9D8;
  padding: 8px;
  text-align: left;
}
.tb-list tbody tr td {
  border-bottom: 1px solid #ccc;
  padding: 8px;
}